Simpson WSV Subfloor Screw #9 x 2 in. T25 Yellow Zinc Collated 2000 Pack Carbide Drill Bits and Accessories Furniture and cabinet construction and Furniture and cabinet construction and detail work Standard Reversible Knife Format compatible with insert shaper cutter head systems designed to accept this knife profile Eliminates floor squeaks The holding power of WSV screws reduces gaps between the joist and subfloor that cause squeaking over time The Simpson Strong Tie Strong Drive WSV2S SUBFLOOR Screw is a collated #9 x 2 inch fastener engineered specifically for fastening subfloor sheathing using the Quik Drive auto feed screw driving system